Study on Depositing Process of Check Dam on the Loess Plateau

WEI Xia; LI Zhanbin; LIPeng; LU Kexin; LI Xungui

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Study on Depositing Process of Check Dam on the Loess Plateau

- Study on Depositing Process of Check Dam on the Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 25, Issue 6, Pages: 10-13(2006)
- 作者机构：
  
  1. 西安理工大学水利水电学院,陕西,西安,710048
  2. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室陕西杨凌,712100
  3. 长安大学环境工程学院,陕西,西安,710054
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2006
- 稿件说明：
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WEI Xia, LI Zhanbin, LIPeng, et al. Study on Depositing Process of Check Dam on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2006, 25(6): 10-13.
DOI：

WEI Xia, LI Zhanbin, LIPeng, et al. Study on Depositing Process of Check Dam on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2006, 25(6): 10-13. DOI：

摘要

在调查典型淤地坝挖取剖面采集土样的基础上

利用库容曲线和实测淤积厚度求得每层淤积泥沙量。根据大水对大沙的原则

反演淤积层所对应的次侵蚀性降雨。通过层淤积量与其相应次侵蚀性降雨的最大30 min降雨强度I30

降雨量P

降雨侵蚀力R

平均降雨强度I等4个指标的相关分析

结果表明

对于无泄洪设施的淤地坝坝地每层淤积量与次侵蚀性降雨的I30

R关系密切

并建立了淤积量与I30

R的三元回归方程

计算值与实测值拟合较好

从而为淤地坝水毁问题的研究提供了理论基础。

Abstract

The deposited volume of each check dam layer was determined by investigating the status of check dams on the loess plateau

digging typical check dams

carrying out the sectional analysis

utilizing reservoir storage and measuring deposited thickness of a layer. Single erosive rainfall was ascertained according to the principle of“more rain

more sediment yield”. Correlation analyses of deposited volume with the maximum rainfall intensity in thirty minutes (I30)

rainfall amount (P)

rainfall erosivity (R) and average rainfall intensity ( I) were made

the re-sult of which indicated close relationships among them. Relationships between deposited volume and the three in-dexes were then established. A good fitting plot between calculated result and observed data was found. The re-search offers a theory basis for the study of water2induced damage.

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